+2005-09-21 Wim Taymans <wim@fluendo.com>
+
+ * gst/elements/gstfdsrc.c: (gst_fdsrc_class_init),
+ (gst_fdsrc_init), (gst_fdsrc_start), (gst_fdsrc_stop),
+ (gst_fdsrc_unlock), (gst_fdsrc_set_property),
+ (gst_fdsrc_get_property), (gst_fdsrc_create):
+ * gst/elements/gstfdsrc.h:
+ Properly implement fdsrc. Removed signal and timeout,
+ better implemented somewhere else.
+
2005-09-21 Stefan Kost <ensonic@users.sf.net>
* docs/gst/tmpl/.cvsignore:
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/socket.h>
#include <fcntl.h>
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include "gstfdsrc.h"
+/* the select call is also performed on the control sockets, that way
+ * we can send special commands to unblock the select call */
+#define CONTROL_STOP 'S' /* stop the select call */
+#define CONTROL_SOCKETS(src) src->control_sock
+#define WRITE_SOCKET(src) src->control_sock[1]
+#define READ_SOCKET(src) src->control_sock[0]
+
+#define SEND_COMMAND(src, command) \
+G_STMT_START { \
+ unsigned char c; c = command; \
+ write (WRITE_SOCKET(src), &c, 1); \
+} G_STMT_END
+
+#define READ_COMMAND(src, command, res) \
+G_STMT_START { \
+ res = read(READ_SOCKET(src), &command, 1); \
+} G_STMT_END
+
#define DEFAULT_BLOCKSIZE 4096
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
ARG_TIMEOUT
};
-static guint gst_fdsrc_signals[LAST_SIGNAL] = { 0 };
-
#define _do_init(bla) \
GST_DEBUG_CATEGORY_INIT (gst_fdsrc_debug, "fdsrc", 0, "fdsrc element");
static void gst_fdsrc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
-static GstStateChangeReturn gst_fdsrc_change_state (GstElement * element,
- GstStateChange transition);
+static gboolean gst_fdsrc_start (GstBaseSrc * bsrc);
+static gboolean gst_fdsrc_stop (GstBaseSrc * bsrc);
+static gboolean gst_fdsrc_unlock (GstBaseSrc * bsrc);
static GstFlowReturn gst_fdsrc_create (GstPushSrc * psrc, GstBuffer ** outbuf);
{
GObjectClass *gobject_class;
GstBaseSrcClass *gstbasesrc_class;
- GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
+ GstElementClass *gstelement_class;
GstPushSrcClass *gstpush_src_class;
gobject_class = G_OBJECT_CLASS (klass);
+ gstelement_class = GST_ELEMENT_CLASS (klass);
gstbasesrc_class = (GstBaseSrcClass *) klass;
gstpush_src_class = (GstPushSrcClass *) klass;
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FD,
g_param_spec_int ("fd", "fd", "An open file descriptor to read from",
0, G_MAXINT, 0, G_PARAM_READWRITE));
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BLOCKSIZE,
- g_param_spec_ulong ("blocksize", "Block size",
- "Size in bytes to read per buffer", 1, G_MAXULONG, DEFAULT_BLOCKSIZE,
- G_PARAM_READWRITE));
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TIMEOUT,
- g_param_spec_uint64 ("timeout", "Timeout", "Read timeout in nanoseconds",
- 0, G_MAXUINT64, 0, G_PARAM_READWRITE));
- gst_fdsrc_signals[SIGNAL_TIMEOUT] =
- g_signal_new ("timeout", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GstFdSrcClass, timeout), NULL, NULL,
- g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
-
- gstelement_class->change_state = gst_fdsrc_change_state;
+ gstbasesrc_class->start = gst_fdsrc_start;
+ gstbasesrc_class->stop = gst_fdsrc_stop;
+ gstbasesrc_class->unlock = gst_fdsrc_unlock;
gstpush_src_class->create = gst_fdsrc_create;
-
}
static void
fdsrc->fd = 0;
fdsrc->curoffset = 0;
- fdsrc->blocksize = DEFAULT_BLOCKSIZE;
- fdsrc->timeout = 0;
- fdsrc->seq = 0;
}
-static GstStateChangeReturn
-gst_fdsrc_change_state (GstElement * element, GstStateChange transition)
+
+static gboolean
+gst_fdsrc_start (GstBaseSrc * bsrc)
{
- GstFdSrc *src = GST_FDSRC (element);
+ GstFdSrc *src = GST_FDSRC (bsrc);
+ gint control_sock[2];
- switch (transition) {
- case GST_STATE_CHANGE_NULL_TO_READY:
- break;
- case GST_STATE_CHANGE_READY_TO_NULL:
- break;
- case GST_STATE_CHANGE_READY_TO_PAUSED:
- src->curoffset = 0;
- break;
- case GST_STATE_CHANGE_PAUSED_TO_READY:
- break;
- default:
- break;
+ src->curoffset = 0;
+
+ if (socketpair (PF_UNIX, SOCK_STREAM, 0, control_sock) < 0)
+ goto socket_pair;
+
+ READ_SOCKET (src) = control_sock[0];
+ WRITE_SOCKET (src) = control_sock[1];
+
+ fcntl (READ_SOCKET (src), F_SETFL, O_NONBLOCK);
+ fcntl (WRITE_SOCKET (src), F_SETFL, O_NONBLOCK);
+
+ return TRUE;
+
+ /* ERRORS */
+socket_pair:
+ {
+ GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ_WRITE, (NULL),
+ GST_ERROR_SYSTEM);
+ return FALSE;
}
+}
+
+static gboolean
+gst_fdsrc_stop (GstBaseSrc * bsrc)
+{
+ GstFdSrc *src = GST_FDSRC (bsrc);
- if (GST_ELEMENT_CLASS (parent_class)->change_state)
- return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+ close (READ_SOCKET (src));
+ close (WRITE_SOCKET (src));
- return GST_STATE_CHANGE_SUCCESS;
+ return TRUE;
}
+static gboolean
+gst_fdsrc_unlock (GstBaseSrc * bsrc)
+{
+ GstFdSrc *src = GST_FDSRC (bsrc);
+
+ SEND_COMMAND (src, CONTROL_STOP);
+
+ return TRUE;
+}
static void
gst_fdsrc_set_property (GObject * object, guint prop_id, const GValue * value,
case ARG_FD:
src->fd = g_value_get_int (value);
break;
- case ARG_BLOCKSIZE:
- src->blocksize = g_value_get_ulong (value);
- break;
- case ARG_TIMEOUT:
- src->timeout = g_value_get_uint64 (value);
- break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
src = GST_FDSRC (object);
switch (prop_id) {
- case ARG_BLOCKSIZE:
- g_value_set_ulong (value, src->blocksize);
- break;
case ARG_FD:
g_value_set_int (value, src->fd);
break;
- case ARG_TIMEOUT:
- g_value_set_uint64 (value, src->timeout);
- break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
-#define SELECT_TIMEOUT (GST_SECOND / 20)
-
static GstFlowReturn
gst_fdsrc_create (GstPushSrc * psrc, GstBuffer ** outbuf)
{
GstFdSrc *src;
GstBuffer *buf;
glong readbytes;
- GstClockTime timeout;
+ guint blocksize;
#ifndef HAVE_WIN32
fd_set readfds;
- struct timeval t, *tp = &t;
gint retval;
#endif
#ifndef HAVE_WIN32
FD_ZERO (&readfds);
FD_SET (src->fd, &readfds);
-
- if (src->timeout != 0) {
- timeout = MIN (SELECT_TIMEOUT, src->timeout);
- } else {
- timeout = SELECT_TIMEOUT;
- }
+ FD_SET (READ_SOCKET (src), &readfds);
do {
- GST_TIME_TO_TIMEVAL (timeout, t);
- if (src->timeout != 0)
- timeout -= MIN (timeout, SELECT_TIMEOUT);
-
- retval = select (src->fd + 1, &readfds, NULL, NULL, tp);
-
- /* Check whether the element got shutdown before full timeout */
- if (retval == 0) {
- if (GST_PAD_IS_FLUSHING (GST_BASE_SRC_PAD (src))) {
- GST_DEBUG_OBJECT (src, "Shutting down with no buffer.");
- return GST_FLOW_WRONG_STATE;
+ retval = select (FD_SETSIZE, &readfds, NULL, NULL, NULL);
+ } while ((retval == -1 && errno == EINTR));
+
+ if (retval == -1)
+ goto select_error;
+
+ if (FD_ISSET (READ_SOCKET (src), &readfds)) {
+ /* read all stop commands */
+ while (TRUE) {
+ gchar command;
+ int res;
+
+ READ_COMMAND (src, command, res);
+ if (res < 0) {
+ GST_LOG_OBJECT (src, "no more commands");
+ /* no more commands */
+ break;
}
}
- } while ((retval == -1 && errno == EINTR) || /* retry if interrupted */
- (retval == 0 && timeout > 0)); /* Retry on incomplete timeout */
-
- if (retval == -1) {
- GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
- ("select on file descriptor: %s.", g_strerror (errno)));
- GST_DEBUG_OBJECT (psrc, "Error during select");
- return GST_FLOW_ERROR;
- } else if (retval == 0) {
- g_signal_emit (G_OBJECT (src), gst_fdsrc_signals[SIGNAL_TIMEOUT], 0);
- GST_DEBUG_OBJECT (psrc, "Timeout in select");
- return GST_FLOW_ERROR;
+ goto stopped;
}
#endif
+ blocksize = GST_BASE_SRC (src)->blocksize;
+
/* create the buffer */
- buf = gst_buffer_new_and_alloc (src->blocksize);
+ buf = gst_buffer_new_and_alloc (blocksize);
do {
- readbytes = read (src->fd, GST_BUFFER_DATA (buf), src->blocksize);
+ readbytes = read (src->fd, GST_BUFFER_DATA (buf), blocksize);
} while (readbytes == -1 && errno == EINTR); /* retry if interrupted */
- if (readbytes > 0) {
- GST_BUFFER_OFFSET (buf) = src->curoffset;
- GST_BUFFER_SIZE (buf) = readbytes;
- GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE;
- src->curoffset += readbytes;
+ if (readbytes < 0)
+ goto read_error;
+
+ if (readbytes == 0)
+ goto eos;
- GST_DEBUG_OBJECT (psrc, "Read buffer of size %u.", readbytes);
+ GST_BUFFER_OFFSET (buf) = src->curoffset;
+ GST_BUFFER_SIZE (buf) = readbytes;
+ GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE;
+ src->curoffset += readbytes;
- /* we're done, return the buffer */
- *outbuf = buf;
- return GST_FLOW_OK;
- } else if (readbytes == 0) {
+ GST_DEBUG_OBJECT (psrc, "Read buffer of size %u.", readbytes);
+
+ /* we're done, return the buffer */
+ *outbuf = buf;
+
+ return GST_FLOW_OK;
+
+ /* ERRORS */
+#ifndef HAVE_WIN32
+select_error:
+ {
+ GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
+ ("select on file descriptor: %s.", g_strerror (errno)));
+ GST_DEBUG_OBJECT (psrc, "Error during select");
+ return GST_FLOW_ERROR;
+ }
+stopped:
+ {
+ GST_DEBUG_OBJECT (psrc, "Select stopped");
+ return GST_FLOW_WRONG_STATE;
+ }
+#endif
+eos:
+ {
GST_DEBUG_OBJECT (psrc, "Read 0 bytes. EOS.");
gst_buffer_unref (buf);
- return GST_FLOW_ERROR;
- } else {
+ return GST_FLOW_UNEXPECTED;
+ }
+read_error:
+ {
GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
("read on file descriptor: %s.", g_strerror (errno)));
GST_DEBUG_OBJECT (psrc, "Error reading from fd");
/* fd */
gint fd;
+ gint control_sock[2];
+
gulong curoffset; /* current offset in file */
- gulong blocksize; /* bytes per read */
- guint64 timeout; /* read timeout, in nanoseconds */
-
- gulong seq; /* buffer sequence number */
};
struct _GstFdSrcClass {
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/socket.h>
#include <fcntl.h>
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include "gstfdsrc.h"
+/* the select call is also performed on the control sockets, that way
+ * we can send special commands to unblock the select call */
+#define CONTROL_STOP 'S' /* stop the select call */
+#define CONTROL_SOCKETS(src) src->control_sock
+#define WRITE_SOCKET(src) src->control_sock[1]
+#define READ_SOCKET(src) src->control_sock[0]
+
+#define SEND_COMMAND(src, command) \
+G_STMT_START { \
+ unsigned char c; c = command; \
+ write (WRITE_SOCKET(src), &c, 1); \
+} G_STMT_END
+
+#define READ_COMMAND(src, command, res) \
+G_STMT_START { \
+ res = read(READ_SOCKET(src), &command, 1); \
+} G_STMT_END
+
#define DEFAULT_BLOCKSIZE 4096
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
ARG_TIMEOUT
};
-static guint gst_fdsrc_signals[LAST_SIGNAL] = { 0 };
-
#define _do_init(bla) \
GST_DEBUG_CATEGORY_INIT (gst_fdsrc_debug, "fdsrc", 0, "fdsrc element");
static void gst_fdsrc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
-static GstStateChangeReturn gst_fdsrc_change_state (GstElement * element,
- GstStateChange transition);
+static gboolean gst_fdsrc_start (GstBaseSrc * bsrc);
+static gboolean gst_fdsrc_stop (GstBaseSrc * bsrc);
+static gboolean gst_fdsrc_unlock (GstBaseSrc * bsrc);
static GstFlowReturn gst_fdsrc_create (GstPushSrc * psrc, GstBuffer ** outbuf);
{
GObjectClass *gobject_class;
GstBaseSrcClass *gstbasesrc_class;
- GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
+ GstElementClass *gstelement_class;
GstPushSrcClass *gstpush_src_class;
gobject_class = G_OBJECT_CLASS (klass);
+ gstelement_class = GST_ELEMENT_CLASS (klass);
gstbasesrc_class = (GstBaseSrcClass *) klass;
gstpush_src_class = (GstPushSrcClass *) klass;
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FD,
g_param_spec_int ("fd", "fd", "An open file descriptor to read from",
0, G_MAXINT, 0, G_PARAM_READWRITE));
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BLOCKSIZE,
- g_param_spec_ulong ("blocksize", "Block size",
- "Size in bytes to read per buffer", 1, G_MAXULONG, DEFAULT_BLOCKSIZE,
- G_PARAM_READWRITE));
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TIMEOUT,
- g_param_spec_uint64 ("timeout", "Timeout", "Read timeout in nanoseconds",
- 0, G_MAXUINT64, 0, G_PARAM_READWRITE));
- gst_fdsrc_signals[SIGNAL_TIMEOUT] =
- g_signal_new ("timeout", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GstFdSrcClass, timeout), NULL, NULL,
- g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
-
- gstelement_class->change_state = gst_fdsrc_change_state;
+ gstbasesrc_class->start = gst_fdsrc_start;
+ gstbasesrc_class->stop = gst_fdsrc_stop;
+ gstbasesrc_class->unlock = gst_fdsrc_unlock;
gstpush_src_class->create = gst_fdsrc_create;
-
}
static void
fdsrc->fd = 0;
fdsrc->curoffset = 0;
- fdsrc->blocksize = DEFAULT_BLOCKSIZE;
- fdsrc->timeout = 0;
- fdsrc->seq = 0;
}
-static GstStateChangeReturn
-gst_fdsrc_change_state (GstElement * element, GstStateChange transition)
+
+static gboolean
+gst_fdsrc_start (GstBaseSrc * bsrc)
{
- GstFdSrc *src = GST_FDSRC (element);
+ GstFdSrc *src = GST_FDSRC (bsrc);
+ gint control_sock[2];
- switch (transition) {
- case GST_STATE_CHANGE_NULL_TO_READY:
- break;
- case GST_STATE_CHANGE_READY_TO_NULL:
- break;
- case GST_STATE_CHANGE_READY_TO_PAUSED:
- src->curoffset = 0;
- break;
- case GST_STATE_CHANGE_PAUSED_TO_READY:
- break;
- default:
- break;
+ src->curoffset = 0;
+
+ if (socketpair (PF_UNIX, SOCK_STREAM, 0, control_sock) < 0)
+ goto socket_pair;
+
+ READ_SOCKET (src) = control_sock[0];
+ WRITE_SOCKET (src) = control_sock[1];
+
+ fcntl (READ_SOCKET (src), F_SETFL, O_NONBLOCK);
+ fcntl (WRITE_SOCKET (src), F_SETFL, O_NONBLOCK);
+
+ return TRUE;
+
+ /* ERRORS */
+socket_pair:
+ {
+ GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ_WRITE, (NULL),
+ GST_ERROR_SYSTEM);
+ return FALSE;
}
+}
+
+static gboolean
+gst_fdsrc_stop (GstBaseSrc * bsrc)
+{
+ GstFdSrc *src = GST_FDSRC (bsrc);
- if (GST_ELEMENT_CLASS (parent_class)->change_state)
- return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+ close (READ_SOCKET (src));
+ close (WRITE_SOCKET (src));
- return GST_STATE_CHANGE_SUCCESS;
+ return TRUE;
}
+static gboolean
+gst_fdsrc_unlock (GstBaseSrc * bsrc)
+{
+ GstFdSrc *src = GST_FDSRC (bsrc);
+
+ SEND_COMMAND (src, CONTROL_STOP);
+
+ return TRUE;
+}
static void
gst_fdsrc_set_property (GObject * object, guint prop_id, const GValue * value,
case ARG_FD:
src->fd = g_value_get_int (value);
break;
- case ARG_BLOCKSIZE:
- src->blocksize = g_value_get_ulong (value);
- break;
- case ARG_TIMEOUT:
- src->timeout = g_value_get_uint64 (value);
- break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
src = GST_FDSRC (object);
switch (prop_id) {
- case ARG_BLOCKSIZE:
- g_value_set_ulong (value, src->blocksize);
- break;
case ARG_FD:
g_value_set_int (value, src->fd);
break;
- case ARG_TIMEOUT:
- g_value_set_uint64 (value, src->timeout);
- break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
-#define SELECT_TIMEOUT (GST_SECOND / 20)
-
static GstFlowReturn
gst_fdsrc_create (GstPushSrc * psrc, GstBuffer ** outbuf)
{
GstFdSrc *src;
GstBuffer *buf;
glong readbytes;
- GstClockTime timeout;
+ guint blocksize;
#ifndef HAVE_WIN32
fd_set readfds;
- struct timeval t, *tp = &t;
gint retval;
#endif
#ifndef HAVE_WIN32
FD_ZERO (&readfds);
FD_SET (src->fd, &readfds);
-
- if (src->timeout != 0) {
- timeout = MIN (SELECT_TIMEOUT, src->timeout);
- } else {
- timeout = SELECT_TIMEOUT;
- }
+ FD_SET (READ_SOCKET (src), &readfds);
do {
- GST_TIME_TO_TIMEVAL (timeout, t);
- if (src->timeout != 0)
- timeout -= MIN (timeout, SELECT_TIMEOUT);
-
- retval = select (src->fd + 1, &readfds, NULL, NULL, tp);
-
- /* Check whether the element got shutdown before full timeout */
- if (retval == 0) {
- if (GST_PAD_IS_FLUSHING (GST_BASE_SRC_PAD (src))) {
- GST_DEBUG_OBJECT (src, "Shutting down with no buffer.");
- return GST_FLOW_WRONG_STATE;
+ retval = select (FD_SETSIZE, &readfds, NULL, NULL, NULL);
+ } while ((retval == -1 && errno == EINTR));
+
+ if (retval == -1)
+ goto select_error;
+
+ if (FD_ISSET (READ_SOCKET (src), &readfds)) {
+ /* read all stop commands */
+ while (TRUE) {
+ gchar command;
+ int res;
+
+ READ_COMMAND (src, command, res);
+ if (res < 0) {
+ GST_LOG_OBJECT (src, "no more commands");
+ /* no more commands */
+ break;
}
}
- } while ((retval == -1 && errno == EINTR) || /* retry if interrupted */
- (retval == 0 && timeout > 0)); /* Retry on incomplete timeout */
-
- if (retval == -1) {
- GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
- ("select on file descriptor: %s.", g_strerror (errno)));
- GST_DEBUG_OBJECT (psrc, "Error during select");
- return GST_FLOW_ERROR;
- } else if (retval == 0) {
- g_signal_emit (G_OBJECT (src), gst_fdsrc_signals[SIGNAL_TIMEOUT], 0);
- GST_DEBUG_OBJECT (psrc, "Timeout in select");
- return GST_FLOW_ERROR;
+ goto stopped;
}
#endif
+ blocksize = GST_BASE_SRC (src)->blocksize;
+
/* create the buffer */
- buf = gst_buffer_new_and_alloc (src->blocksize);
+ buf = gst_buffer_new_and_alloc (blocksize);
do {
- readbytes = read (src->fd, GST_BUFFER_DATA (buf), src->blocksize);
+ readbytes = read (src->fd, GST_BUFFER_DATA (buf), blocksize);
} while (readbytes == -1 && errno == EINTR); /* retry if interrupted */
- if (readbytes > 0) {
- GST_BUFFER_OFFSET (buf) = src->curoffset;
- GST_BUFFER_SIZE (buf) = readbytes;
- GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE;
- src->curoffset += readbytes;
+ if (readbytes < 0)
+ goto read_error;
+
+ if (readbytes == 0)
+ goto eos;
- GST_DEBUG_OBJECT (psrc, "Read buffer of size %u.", readbytes);
+ GST_BUFFER_OFFSET (buf) = src->curoffset;
+ GST_BUFFER_SIZE (buf) = readbytes;
+ GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE;
+ src->curoffset += readbytes;
- /* we're done, return the buffer */
- *outbuf = buf;
- return GST_FLOW_OK;
- } else if (readbytes == 0) {
+ GST_DEBUG_OBJECT (psrc, "Read buffer of size %u.", readbytes);
+
+ /* we're done, return the buffer */
+ *outbuf = buf;
+
+ return GST_FLOW_OK;
+
+ /* ERRORS */
+#ifndef HAVE_WIN32
+select_error:
+ {
+ GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
+ ("select on file descriptor: %s.", g_strerror (errno)));
+ GST_DEBUG_OBJECT (psrc, "Error during select");
+ return GST_FLOW_ERROR;
+ }
+stopped:
+ {
+ GST_DEBUG_OBJECT (psrc, "Select stopped");
+ return GST_FLOW_WRONG_STATE;
+ }
+#endif
+eos:
+ {
GST_DEBUG_OBJECT (psrc, "Read 0 bytes. EOS.");
gst_buffer_unref (buf);
- return GST_FLOW_ERROR;
- } else {
+ return GST_FLOW_UNEXPECTED;
+ }
+read_error:
+ {
GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
("read on file descriptor: %s.", g_strerror (errno)));
GST_DEBUG_OBJECT (psrc, "Error reading from fd");
/* fd */
gint fd;
+ gint control_sock[2];
+
gulong curoffset; /* current offset in file */
- gulong blocksize; /* bytes per read */
- guint64 timeout; /* read timeout, in nanoseconds */
-
- gulong seq; /* buffer sequence number */
};
struct _GstFdSrcClass {
projects / platform / upstream / gstreamer.git / commitdiff